Convert joule per kilogram to btu (it) per pound instantly. Type in either field — results update live.
Selected J/kg values converted to BTU (IT)/lb using the exact factor from this tool.
| J/kg | BTU (IT)/lb |
|---|---|
| 0.01 | 0.0000042992 |
| 0.1 | 0.0000429923 |
| 1 | 0.0004299226 |
| 2 | 0.0008598452 |
| 3 | 0.0012897678 |
| 5 | 0.0021496131 |
| 10 | 0.0042992261 |
| 20 | 0.0085984523 |
| 50 | 0.0214961307 |
| 100 | 0.0429922614 |
| 1,000 | 0.4299226139 |
Exact conversion factors in both directions, plus a worked example.
1 J/kg = 0.0004299226 BTU (IT)/lb
1 BTU (IT)/lb = 2326 J/kg
To convert joule per kilogram to btu (it) per pound, multiply by 0.0004299226.
To convert btu (it) per pound to joule per kilogram, multiply by 2326.
Example: convert 10 J/kg to BTU (IT)/lb
10 × 0.0004299226 = 0.0042992261 BTU (IT)/lb
Short background on the units used in this conversion.
The joule per kilogram (J/kg) is the SI unit of fuel efficiency on a mass basis — useful energy per unit fuel mass.
Joules per kilogram compare heating values and energy content of fuels, propellants, and biomass on a mass basis.
BTU (IT) per pound equals 2326 J/kg — a common US heating-value unit for fuels on a mass basis.
BTU per pound appears on fuel datasheets, LHV/HHV ratings, and industrial combustion specifications in the US.
1 joule per kilogram = 0.0004299226 BTU (IT) per pound1 btu (it) per pound = 2,326 joules per kilogram. IT and thermochemical variants are kept separate.Jump to any fuel efficiency-mass conversion starting from joule per kilogram — including the reverse direction and every other unit in our dataset.